From: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
To: Mimi Zohar <zohar@linux.ibm.com>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
linux-integrity@vger.kernel.org
Subject: Re: ima_tpm_chip is queried and saved only at IMA init, but never later
Date: Thu, 3 Oct 2019 17:39:03 -0700 [thread overview]
Message-ID: <570885b3-c595-7381-3c03-91282d82351e@linux.microsoft.com> (raw)
In-Reply-To: <1570117759.5046.4.camel@linux.ibm.com>
On 10/3/19 8:49 AM, Mimi Zohar wrote:
>> Can IMA take a dependency on TPM and postpone IMA initialization until a
>> TPM device shows up?
>
> IMA is already on the late_initcall(), waiting for the TPM
> initialization to complete.
> How would you define a TPM dependency?
I meant - can IMA return a status code from it's init routine such that
it gets called back when a TPM device shows up. And, at that point
continue the initialization.
Similar to how a driver for Device A would indicate it's dependency on
the availability of a Device B. I am not sure if such a thing is
possible with IMA.
Thanks,
-lakshmi
next prev parent reply other threads:[~2019-10-04 0:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-24 22:31 ima_tpm_chip is queried and saved only at IMA init, but never later Lakshmi Ramasubramanian
2019-09-24 22:37 ` James Bottomley
2019-10-03 15:40 ` Lakshmi Ramasubramanian
2019-10-03 15:49 ` Mimi Zohar
2019-10-04 0:39 ` Lakshmi Ramasubramanian [this message]
2019-10-03 15:58 ` James Bottomley
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